About a year ago I introduced some of PC World's less tech-savvy readers to the Undo function, which can be lifesaver when you need to reverse whatever unintended (and/or unwanted) action you just took.

Most often, that's something like an accidental paragraph deletion in Word, or clicking the wrong option in a pull-down menu.

Earlier this morning I was reminded that Undo--by way of its universal keyboard shortcut, Ctrl-Z--can do more than just fix typos and reverse errant clicks.

For example, let's say you just deleted a file you didn't mean to delete. Instead of opening up the Recycle Bin and poking around until you find the file, a simple press of Ctrl-Z should restore it to the folder window from which you deleted it. The same applies to batches of deleted files.

Also, a very common boo-boo is when you inadvertently rename a file. Can't remember the old filename? No problem: Just press Ctrl-Z (before you close the folder containing the file) and presto, it reverts to the original name.

Needless to say, Undo is your go-to function for undoing unwanted actions and changes. Once you start using Ctrl-Z on a regular basis, you'll wonder how you got along without it.

Have you discovered any other lifesaving uses for Undo? If so, leave a comment and tell me all about them.

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